Watch case



FIG. 1 is a front view of my new, original and ornamental design for a watch case;

FIG. 2 is a rear view of the watch case thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a front perspective view of the watch case thereof.

The broken lines in the drawings are used to show portions of the watch case that do not form part of the claimed design. 

The ornamental design for a watch case, as shown and described. 